Xero, BigCommerce, Bandcamp, and other general improvements!

Shopify: Fixed an issue that prevented reactivating subscriptions

Xero: Pushed several improvements and fixes to keep it running smoothly

Wix: Fixed several minor details and bugs

BigCommerce: Added support for syncing quantities at product level

BigCommerce: Fixed other minor issues

Bandcamp: Added support for multi-location

Fixed some minor issues between Trunk and our payment processing system

Improved our pricing calculation algorithm

Fixed some issues with our email delivery system

Some other internal adjustments and fixes to keep Trunk working like a charm!